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<p>prime numbers between  and  (corresponding to a 2,048-bit key).  Many different algorithms for prime selection are used in practice.<br/>
#*  and  are kept secret.<br/>
# Compute .<br/>
#*  is used as the <a href="page.php?w=Modular_arithmetic">modulus</a> for both the public and private keys. Its length, usually expressed in bits, is the <a href="page.php?w=key_length">key length</a>.<br/>
#*  is released as part of the public key.<br/>
# Compute , where  is <a href="page.php?w=Carmichael%27s_totient_function">Carmichael's totient function</a>.</p><p>
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